Here's what the area around the overpass looks like; I hadn't realized the overpass is almost a kilometer long.
I also went for a walk with friends over the overpass that day; thanks to Ami for the photos.
There were lots of news crews to be seen.
'You have accompanied Seoul's history."
There was even a jungle gym for the kids...
...as well as hopscotch.
The apartments of the Ahyeon New Town can be seen in the distance.
The area to the north has been demolished to make way for the Buk Ahyeon New Town.
They'd just shooed everyone off the overpass at 4pm when this photo was taken from the Ahyeon Station end.
More shots of the overpass from below.
There's an astonishing contrast between the older areas around the overpass (including a market and red light district) and the New Town apartment complexes going up.